Go to Appearance > Editor > functions.php and locate the following code and delete it. This will allow you to set whatever page you want as the homepage.
//======================================================================
// Change Home Page Settings
//======================================================================
$homepage = get_page_by_title( ‘Home’ );
if ( $homepage )
{
update_option( ‘page_on_front’, $homepage->ID );
update_option( ‘show_on_front’, ‘page’ );
}